Verified answer

3 + 4 + 5 = 12

720/12 = 60

5*60 = 300

x+y+z=720

x/3=y/4=z/5

720/3+4+5=

720/12=60

x/3=60

x=3*60=180

y/4=60

y=4*60=240

z/5=60

z=5*60=300

a maior é 300

3+4+5=12

720/12=60

60.5=300